Abstract

Two recent findings concerning high-energy radiation properties of
active galactic nuclei -- discovery of breaks in hard X-ray spectra of
Seyfert galaxies, and discovery of huge fluxes of hard gamma rays from
blazars -- seem to press us to change our standard views about radiation
production in these objects. I review briefly the existing radiation
models, confront them with the newest observations, and discuss newly
emerging theoretical pictures which attempt to account for the
discoveries.

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